In my search for inexpensive add on switches for a couple of 3 way applications, i found some UltraPro brand on Amazon for under $13/each. I noticed they were rebranded Jasco switches, so i bought a few. I just received them and can confirm they are rebranded Jasco add on switches. They work great. Better than spending $25 a piece for the GE switches.
Just an FYI in case anyone else needed some.



